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authorRobert Dolca <robert.dolca@intel.com>2015-10-22 12:11:40 +0300
committerSamuel Ortiz <sameo@linux.intel.com>2015-10-25 20:29:05 +0100
commitcaa575a86ec1f177730cafa089d69ab4e424860c (patch)
tree1470623ae3570e1464697599c8bc8471c0c7f815 /net/nfc
parent22e4bd09c401905671f3787a8392d269a0ebfa0d (diff)
downloadlinux-caa575a86ec1f177730cafa089d69ab4e424860c.tar.bz2
NFC: nci: fix possible crash in nci_core_conn_create
If the number of destination speific parameters supplied is 0 the call will fail. If the first destination specific parameter does not have a value, curr_id will be set to 0. Signed-off-by: Robert Dolca <robert.dolca@intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'net/nfc')
-rw-r--r--net/nfc/nci/core.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c
index f66a5da85ddb..9d5f7a2b1d03 100644
--- a/net/nfc/nci/core.c
+++ b/net/nfc/nci/core.c
@@ -602,12 +602,19 @@ int nci_core_conn_create(struct nci_dev *ndev, u8 destination_type,
if (!cmd)
return -ENOMEM;
+ if (!number_destination_params)
+ return -EINVAL;
+
cmd->destination_type = destination_type;
cmd->number_destination_params = number_destination_params;
memcpy(cmd->params, params, params_len);
data.cmd = cmd;
- ndev->cur_id = params->value[DEST_SPEC_PARAMS_ID_INDEX];
+
+ if (params->length > 0)
+ ndev->cur_id = params->value[DEST_SPEC_PARAMS_ID_INDEX];
+ else
+ ndev->cur_id = 0;
r = __nci_request(ndev, nci_core_conn_create_req,
(unsigned long)&data,